/sɪˈdeɪt ||; sɪˈdet/adj quiet, calm and well behaved 安静的；镇静的；庄重的
sedate²
/sɪˈdeɪt ||; sɪˈdet/verb [T] to give sb a drug or medicine to make him/her feel calm or want to sleep 给某人镇静剂: The lion was sedated and treated by a vet.兽医给狮子用镇静剂，然后进行治疗。 ➔sedation /sɪˈdeɪʃn ||; sɪˈdeʃən/ noun [U]: The doctor put her under sedation.医生用镇静剂使她安静下来。